APA (7th ed.) Citation
(1990). Use of artificial tracers in hydrology. [s.n.].
Chicago Style (17th ed.) Citation
Use of Artificial Tracers in Hydrology. [s.l.]: [s.n.], 1990.
MLA (9th ed.) Citation
Use of Artificial Tracers in Hydrology. [s.n.], 1990.
Warning: These citations may not always be 100% accurate.